Tandy 600 Programmer's Reference Manual page 50

Bios programmers
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2.
File
Time
-
This
word
contains the time
of
the
last
file
modification.
Times
are stored
in
packed
binary
in
the
following format:
HHHHHMMMMMMSSSSS
H
is
hours,
0-23
M
is
minutes,
0-59
S
is
seconds, 0-29
(two
second
increment)
3.
File
Date
-
This
word
contains the date
of
the
last
time the
file
was
modified.
Dates
are
stored
in
packed
binary
in
the
following format:
YYYYYYYMMMMDDDDD
Y
is
year,
0-119 (1980-2099)
M
is
month, 1-12
D
is
day, 1-31
4.
File
Size
-
This
field
contains 2
words
which
give the size
of
the
file in
bytes.
The
least
significant
word
is
stored
first.
5.
File
Name
-
This
is
an
ASCHZ
string
which
gives the
name
of
the
file.
Disk
files
do
not
have
the
drive specifier given.
If
the carry
flag
is
set
on
return,
the operation
failed
and
the status
code
is
in
AX.
Error
Returns:
45

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